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UNITED STATES PATENT OFFICE.

FERDINAND KEEHNOLD, OF BRIDGEPORT, CONNECTICUT.

WRENCH.

Specification of Letters Patent No. 14,243, dated February 12, 1856.

To all 'whom t may concern:

Be it known that I, FERDINAND KEEH- NOLD, of Bridgeport, in the countyof Fairfield, State of Connecticut, have invented a new and usefulImprovement in the Construction and Manufacturing of AdjustableTWrenches for Machinery and Oarriages and other Purposes; and I dodeclare that the following is a full and exact description of the same,reference being had to the accompanying drawings and the letters ofreference marked thereon.

The nature of my invention diers in shape and construction from allother wrenches in use. It can be cast, or forged, of any metallicsubstance, with less labor and expense, than other adjustable wrenches.

To enable others skilled in the art to use and manufacture my invention,I will proceed to describe its construction and operation.

I construct the wrench in three parts. A represents the handle, on oneend of which is the jaw, B, and the crop bar, O, which forms the gagefor the jaw D and which is iitted on to C, in order to be moved throughthe eccentric E. The grooves in O, and E, serve to keep it from slippingand by the help of the pin, F, which connects the jaw, D, with theeccentric, E, to eXert all the strength necessary to operate the same.The small nut, G, which is screwed on the end of the gage bar, O, willprevent the wrench from coming apart, making it a complete Xture, by oneside of the handle, H, being secured to the sliding jaw, D, by the jointpin, F, causing the opening of the mouth which is in front, andcontrary, as constructed in other wrenches usually used, making it morehandy in its application to general use, and being so plainlyconstructed it can be made much cheaper than the adjusting Wrenches nowin use, and may be made of diiferent sizes as want may dictate.

What I claim as my invention and desire to secure `by Letters Patent is-The jaw D and lever I-I as constructed operating in connection with theratchet bar O in the manner set forth.

FERDINAND KEEHNOLD.

Witnesses:

I. W. BRIGGs, JOHN C. LUYsTER,

